Valve-cage remover



- R.' w. MAGNA. VALVE CAGE REMOVRf Armenien FILED orf 9'; ma.

1,437,983'. Patented Dec. 5, 1922,.

L snm 1.

2 SHEETS- y I NVENToR ATTORNEY. l

R. W. MAGNA.

VALVE CAGE REMOVER. AFPLlcArloN man ocl 9. 1920.

Patented Dec. 5, 1922'.

2 SHEETS-SHEE 2.

' 7m ATToRNEYa.

Patented Dec,y 5, 1922.

'unirse stares Partnr eprice.

RUSSELL W. MAGNA, or HonYoK'n, MASSACHUSETTS.

VALVE-CAGE REMOVEBJ.

Application filed October 9, 1920. Serial No. 415,785.

To all whom it may concern:

Be it lrnown that I, RUSSELL 7. MAGNA, citizen of the United States, residingy at Holyoke,` in the County of Hampden and State of Massachusetts, have `invented new and useful Improvements in Valve-Cage Removers, of which the following is a speciiication.

' This invention relates to an improvement in valve-cage removers for removing valvecages of valve-in-head engines.

It is wellv known that such valve-cages,V

due to corrosion, depositA of carbon, etc., often Stick very tightly in their seats and require considerable force to remove them. The dificulty heretofore in removingsuch valve-cages without injury to the valve or its parts, is in obtaining a direct pull upward on the cage in a direction coaXialwith its path of movement.v The usual method of prying upwardly upon the valve-spring or valve-spring seat with a screw-driver or other tool is an ineliicient application of power and not only mars'the appearance of the parts,y but also tends to bend the valvestem out of line or injure the valve-spring.

The salient feature i of the present inir provement lies in providing vmeans for obtaining a positive connection with the valvestem without injury` to the stem and inapplyingthe lifting force to remove the valvecage substantially vin line with the valvestem. thus avoiding any tendency to bend or distort the parts of the valve-cage and valve. y

For accomplishing this object, I have provided what may be broadly termed a double j`a.clring-mechanism,one jackingmechanism operative to force a positive engagement between the lifting means and the valve-stem. preferably by an engagement be! .ing other elevation;

Fig. 2 1s a 'side elevatlon'of the remover,

looking in the direction of the arrow'in Fig.

l, with a portion of the jack-frame out away to show the enclosed parts in elevation; f

Fig. 3 is a 'detail section of the valve-Stemengaging elements; f

F' g. t is a similar view of the valve-stem# engaging elements in a vdifferent position :l

Fig. 5 is a detail crossfsection" through the line 5 5 of Fig. 3; and f f y .i z'

Fig. 6 is a detached' view of ahook-mem- 'ber of the hook-device. l l

Referring more particularly to the drawparts of the remover and valve in ings,*1 indicates the engine head having the usualopening therethrough to receive the Vvalve-cage 2 whichhas its seat upon a shoulder 3l of the engine head opening.l lThe valve-capire 2, vinthe form of a cylindrical shell. has a tubular guide 4 for the `stern 5 of the valve'G. The valve 6 is v.held to itsseat 7 onthe valvecage by the usual valve-spring 8 compressed between the valve-cage 2 and the valve-spring seat 9', which is held onv the vend of the valve-stem by the `'valve-stem key 10. The valve-cage isfretained in the engine (not shown) in screw-threaded engagement with the threads 11 at the `upper end of said headopening by a suitable retaining-nut engine head opening. The above-mentioned parts are of usualxconstruction andtneednot be further described. y

The remover comprises anouter or jack frame l2 for resting onthe engine head and an inner casing 13` supported within the jack-iframe, said casing 13 having means associated therewith for 'n connective engagement to the valve-stern,` as will be hereinafter y v` described. Thecasing 13, when connected to the valve-stem, is lifted with respect to the y jack-frame 12 by a suitable jacking-mechanism, to lift and remove the valve-cage. The jacking-mechanism for lifting the casing 13 comprises a screw 14 in screwthreaded engagement withV the head'l of said casing 13v o and having a nutl in threaded engagement with the upper portion thereof. The screw 14`is provided with a cross-piece 141:a at its upper end so that it may be turned by hand in the head l5 independently of the nut 16,

for a purpose hereinafter described. The

nut 16 is formed with aj flange yor disk portion 17 adapted to bear against the upper end of the jackffrm?? ,1.2, and said nut has a a lpair of gripping jaws 29 and handle 18 whereby it may be turned upon the screw 1e to raise the same, together with the casing 13 carried thereby, in the usual manner ot jacking-mechanism.

The elementscarried by the casing 155 for connective engagement with the telve-stein will now be described. A. hook-device is mounted within the sidewalls of the casing, which hook-device comprises preterably, 'four separate hook members 19n 19', 19b and 19C, each of the 'forni shown in G. The hook membersare preferably arrangedk in pairsf-19 and 19h at one side of the casing; '13 and 19,a and19c at the other side of seid casing (see lligz)n said pairs of hook members being oppositelj,7 disposed in facing' relation7 as shown in Figs. 1,` 3 and l. Each hook-member, es shown in Fig. 6, is formed with-Ta straight slot 9,0 at its upper endV and a slot 21 at its lower end having both a straighten/'ay portion and a curved portiona as shown, and each hoolimember is also formed with en openended notch 22 intermediate its slot-s, together with a hook 23 at itsy lower end.

Cross-pins '24, 257 26 and 947 connect opyp'osite sides of the casino; 139 and slidably mounted upon the pins 9A; and 25 are the hoolom'einbers 19 and 19b by having the cross-,pins 24 and 25 passing' through the slots 2O and 21 of said hook members. .Similarly, the hook-members 19a and 19C .are slidably mounted upon the pins 26 and 27. lt will be observed-that the hoolrportions 23 of the hoolomernbers 19a and 19C adapted to engage, each under a separate end ol? the valve-stein key 10 (see 2) 'for balanced hold thereon, and that the opposite'ly-tacing hook-members and 19h similarly engage respective separated ends ot the valvestem key, so that seid oppositelyfacing; hook portions coo';V 1ate in effecting aV positive engagement beneath the key 10 :of the valve-stern 5, as shown in Fie'. 1l.

`The hook-members 19, 19, 19b and 19" are adapted to be moved upwardly and down`- wardly within the casing 13 by means of the screw 141-, which carries a we sher 28 listed at vits lower end. 'for extendingwithin all oli the notches 2Q of seid hook-members. notches 22' are slightly. wider than the thiclrness ol the washer Q", to permit a sli 'ha swinging' `movement of the hook-members whenguided upwardly and downwardly by `the cam sans consisting the slots end 21rand pins Q11. 25, 26. and 27.

Pivotelly mounted within the casing 13 is I V the jaw 29 being hung` on the cross-pir 25 and located between the hook-members 19 an d 19h`v the jaw EO being` hung` on the cross-pin 27 and located between the hook-members 19aL and 19C (see Fig'. The ripping QQe'nd 30 are each vsplit at ther upper ends and carry therein adjustable beerngetuds The arriving at the upper side oi sv` issues?,

collar 36 ano. the wf, sher Q8. The lowerporH tion ot each gripping' jaw 29 and 30 is yprefers-bly formed with 'gripping teeth 39 for gripping engagement with the upper yend ot the Valve-stem. u y

rlh-e operationot the valve-cage remover i (as ollows: The parts, asseinbledas shown f s in Fig; 1, are placed over .the Valve with the tacit-freine 12 resting upon theenggine head 1, The irst action is to connectiyely engage the casing 13 with the stern of the Valve, and

this connection, 1s effected ec follows: .The

hoolcdevice comprising the hoolI-inembers,

ktogether with the opened gripping jaws7 vare ust down over the end of the valve-stein 5 until the lower ends of the hooloinei bers lne vulve-spring seat 9. Thereupon,

he screw 1-1 is turned by its cross-piece 14a screw downwardly through the head the trarne 'l- The downward moreu c between the]bearing-studs 3S/end 34, so* ino' to spread the upper endsv of grip--. vs Vand 30- end' swing.' the seine A pivot-pins 25 and 27. to firmly grip he lower toothed encs o'l1 seid jaws upon' the upper end ol' the Vabre-stem 5.

The valve-stern being thus firmly gripped by the jaws andBO, the c 'inued downward nioif'enent of the screw-14 slides the members doi-f: wardly upon the guiding pins 2te-25, lirst in e straight-linealirection in accordance with the straight-away portions o? the guideslots 20 and 2L which downward movement of the hook-members 9 com 27.) to errent an d.

e o. ends or" 4he "e he 4.. cam-Collin? is preic t at in'unediately L relire-stem lier rably so detacr the hooku he screw 141 carries the cani-collar llt) numbers have engraved beneath the valve yf "r3 1 stein key lO, shown. it wi'ii release the Jews 2S) and 30 from gripping); en'gfagen Y' with 'the valve-stein, this bei'1 l accomplished the bearing members anl Set o1-' said collar @oj as shown in Fig. el.

It will be observed, that `the operation above described is, in effect, a acking action inwhicli the grip of the jaws 29.and 30 upon the valve-stem 5 actsvas a purchase for enabling the hook-members to be forced ,down ward against the tension of the valve-spring 8 in order to` engage beneath the valve-stein key 10.

The liook-members having been thus en? gaged beneath the valve-stem .key 10, the next action is tooperate the second jackingmechanism for lifting thevalve-stem with its valve-cage out. of the engine` head opening. v This is accomplishedby screwing the nut 16 downwardly on the screw Muntilits flangefl'A bearsv 4against the jack-frame 12,

whereupon a continued screwing actionof the nut ,16 willvraisethe screw 14 with the casing'13 and the .hookfmembers carried therebyf. l l

An advantageous feature of-.the present device is that the raising movementof the casing 13 lifts the hook-membersV by means of the cross-pins 2,5 and 27 bearingl against the upper curved' ends of the slots 21 ,in Asaid hook-members, thereby causing the lifting force to act in a manner to swing the lower hookedends23 even more firmly toward `one another so that there is no possibility of their becoming disengaged from lthe valvestem key 10.` s y After the valve-cage has. beenremoved, the hook-membersmay be disengaged from beneath the valve-stem key in a manner `to avoid injury to' the valve-stem or gripping jaws, and it is for this purpose that the camcollar 36 is slidably mounted upon the screw 14 and yieldingly held upwardly in its position by the spring 38. In disengaging-the hook-members from. the valve-stem key `10, the screw 14 isbacked off, to slide the hookmembers upwardly relative to the casi-ng 13 and'crosspins 24, 25, 26,27, the lower slots 21 acting, of course, on. the pins 25 and 27, to gradually spread or open the hook portions 23. In this upward travel of the screw 14 relative to the casing 13 and jawsf29, 30,

in disengaging the hook-members, the camcollar 36 is not carried upwardly with the screw, as otherwise itwould again act on the bearing-studs133 and Saito gripthe aws 29 and 30 upon the valve-stein, and thus either wear out lthe teeth of the jaws or injure the valve-stem by sliding over the same in gripped contact; Thecam-collar.36 remains inthe p'ositionshownvin Fig; 4- at the lower side of the stiidrbearingr members 33 and 341 during the backing off of the screw 14, whereby the spring 38 below lthecamcollar is slightly compressed.. As soon, however, as the hook-members have been entirely disengaged from'the `valve-stem key 10 and together with the jaw-s'29-2OV are removed from the end of the valve-stem, the lower end of thejaws may then freely lswingtoward engaged valve-stem key.

said Ivalve-stern `by engagement therewithl Iabove the. valve-spring seat, ,and jacking mechanism for lifting said element and enf gaged ,valve-stem. v i

. 2. AVvalve-cage remover for 'removing a valve-cage containing a valve and` itsI stem and valvefstem key, comprising in combination, a lifting element for` detachable connection in direct engagement vwith the key of said. valve-stein, and jackingrnechanism for i lifting said element and engaged valve-stem.

.3. A valve-cage remover (for. removing a valve-cage containing a valve Vand, its stem, valve-stem key,.and valve-spring, comprising. in combination, a hook-'deviceand means to force the saine against the Atension of said valve-spring to engage .beneath the key-of said valve-stem. n

`el. A` valve-cage remover for removing a valve-cage containing a valve and' its stem, valve-'stem key, and valve-spring, comprising injroonibination,` a hook-device, means Yto force the `saine against the tension of said valve-spring to engage beneathfthe keyof said valve-stem, and. jacking mechanism for lifting said hook-device and engaged vvalve- .stem key. .n

. 5. A valve-cage remover for removing a. valve-cage containingavalve and its stem, a valve-stem keyv and a valve-spring, com'- prising in combination, jaws for gripping said valve-stem, a hook-device, meansfor forcing said hook-.device against the tension of said valve-spring into hooked engage ment with said valvestem key, and jacking mechanism for lifting said hook-device and engaged valve-stem key.'

6.r A valve-cage removerifor remcving a valve-cage containing'a valve and its stein, a valve-stein key and a valve-spring, coinprising in-.combinatiom jaws for gripping said` valve-stem, actuatingmmeans for `said gripping jaws, a hook-device.v means `for forcing said .hook-device against the tension of sai-d valve-spring into hookedengagement with said valve-stein key7 andjacking mechanism for lifting said hook-device-and 7. A valve-cage removerfor removing` a valve-cage containing a valvevandits stem, a valve-stem key and a valve-spring, comprising in combination, jawsfor .gripping said valve-stem, actuating means for said gripping jaws a hook-device, means, for

forcing said hook-device against the tension of said valve-spring into hooked engage ment withsaid valvestem key, said actuating means acting to release said gripping jaws when said hook-devicel is engaged with said valve-stern key, and jacking mechanism for lifting said hook-device and engaged valve-stem.

8. A valve-cage remover for removing a valvecage containing a valve and it'sstem and a valve-stem key, comprising in combination, jaws for gripping said stem, a hookdevice, and jacking mechanism employing a Igripped engagement of said jaws on said stem as a purchase for forcing saidhookdevice intohooked engagement with said valve-stem key.

9. n. valve-cage remover for removing a valve-cage containing a valve and its stem and a valve-stein key, comprising in combination, jaws for gripping said stem, a hook'- device, jacking mechanism employing a gripped engagement of lsaid jaws on said stem as a purchase for forcing said hookdevice into hooked engagement with said valve-stem key', and a second jacking mecha nism for liftingv said hook-device and engaged valve-stem key.

10. A. valve-cage remover for removing a valve-cage containing a valve and its' stem, a valve-stem key, and a valve-spring, comprising in combination, jaws for gripping said stem, a hook-device, and jacking mecha.'- nism comprising means to actuate said jaws into gripping engagement with said stem, said jacking mechanism employing the gripped engagement of said jaws on said stem as a purchase Jfor orcingsaid hook- `device against the tension of said valvespring into hooked engagement with said valve-'stem key.

11, A valve-cage remover for removing a valve-cage containingv a valve and its stem, a valve-stem key and a valve-spring, cornprising in combination, jaws for gripping said stem, a hook-device, jacking mechanism comprising means to actuate said jaws into gripping engagement with vsaid stem, s aid jackingmechanism employing thel gripped engagement of said jaws on said stem as a purchase for Jforcing said `hook#device Aagainst the tension ofy said valve-'spring' into' hooked engagement with said va1 stem key, and a second jacking mecha sm. for

lifting Said hook-devies nia engagea. valve-L stem key.

12. A valve-'cage' remover for removing a valvecage containing a valve and its stem, and a valve-stein key, comprising inr coinbination, jaws for gripping said valve-stem, a hook-device, means for forcing said hookdevice into hooked engagement with said valve-stem key, comprising a screw', and cam means operatedl by said' screwy for ao tuating said. gripping jaws.

13. A valve-cage remover for 'removinga valve-cfage containing a valve and its stem, and a valve-stem key, co'mj'i'rising in combination, gripping' jaws', a hook-device, means for forcing said hook-device into hooked engagement with said valve-stem key, coinf prlsing a screw, and cani means operated by said screw for actuating said gripping jaws into gripping engagement with said stem, said cam means acting to rettasc said javvs when the hook-device is liooked engagement with said valv'estem key.

14. valve-cage remover for removing a valveecage containing valve and its stem, and valve-steni key, comprising in combination, jaws for gripping said valve-stem, a ifeiatv'eiyfinovabie hook-device, means for moving said nookdevice downwardly from said jaws, and cam 'means to act-,nate said hook-device u into hooked engagement with said valve-"stein 15. A valve-cago eiiioverf forreinjoving a valve-cago oon-taining' avaive and its stein, and valvestem key, comprising in coiiioi.- nation, pvoted jaws for gripping' said valvesteiii, a relatively-movab1o hook-device, a screw operative to inove said hook-device downwardly from said jaws, cam means to actuat'e said hook-device into hooked engagement with said valve-stein key', and cam means operated by said screw for actuating said grippii'i'g`jaws.A Y

ic. A valves-cage remover for? removing a valve-cago containing.' a vai e and its" stein, and vale-steiniov, comprising combination, jaws for 'gripping said vaivcrstom, a movable' hookdevice',A a screvv' operative to move said hookldevco upwardly and downxvardiy reiatveto said jaws", cani means to activate said hookdevioo into hooked enu gageinont with said vaivest'enr key', and cam means. operated by sardi screw' for' actu-ating said gripping jaws dur-ing' the downward movement of said" hook-device" into gripping engagement with saidvalvestern, said cam means being inoperative to actuat'e said gripping' jaws during the' upward .movement of said hokldevi'ce when being. disengaged from said va temi Y sa 'e remover: for removing "g val-ve and its.- stem,

ted. fr for gripping v i. t. T. ing. mid` Kookdevico o hooked c glageiient vwith .sai-d.. valve steni: key, compr si g a vliand'operated screw working in said ,if'rame?,v a second frame for supporting saidii'rst frame, andazhand-op'- erated nut carried on' said second frame for working. on said sc'rew to lift said first frame.

18'. In av valv'eecage' remover for removing a valve-cage containing a valve. and its stem, and valve-stem; key, in combination, a frame, jaws pivotaily mounted. in saidV` frame for -st'eniik'ey in combination, arr-ame",

operated screw working in said frame, cam' means operated by said screw for actuating said gripping jaws, a secondframe for supporting said first frame, and a 'hand-operated nut carried on said second frame for working on said screw to lift said rst frame. l

19. A valve-cage remover for removing a.

valve-cage containing f a valve, its stem, valve-sprlng and valve-sprung seat, comprising 1n combination, a device for effecting a balanced hold at different sides of said valve stem by engagement therewith above `said valve-spring seat, a jacking mechanism for lifting said device 1n a direction coaxial with the path of movement of saidva1ve-` cage during its removal.

In testimony whereof I have aixed 

